Function _empty_tree

tools/test_selector.py:206–209

(repo: Path)

def _empty_tree(repo: Path) -> str:
    # Avoid hardcoding; derive the empty tree hash deterministically.
    empty = _run_git(["hash-object", "-t", "tree", os.devnull], repo)
    return _validate_sha("empty-tree", empty)


def determine_diff_range(repo: Path, override_base: str | None, override_head: str | None) -> tuple[str, str, DiffMode]: